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![]() B07V7B98DT Price: $69.99 Score: 1000.000 Category: Electronics Rating: 4 Votes: 12 Find similar productsAstromania 1.25 H-Alpha Night Sky Filter. The Night Sky Hydrogen-Alpha Filters are long-pass filters with a 50% transition from blocking to passing at about 640nm. At wavelengths longer than 650nm, transmittance is 80% or above. The filter is used as an extreme anti light-pollution filter, and for contrast-enhancement of emission nebulae and other astronomical objects bright in the infrared. The 1.25 Night Sky Hydrogen-Alpha Filter, threads into the nose-piece of industry-standard 1.25 Digital Imagers. The Astromania H-Alpha cut-off filter enhances the contrast between object and sky, allowing you to take good quality images even under urban skies. | ![]() B07D8J69M7 Availability: Currently unavailable Score: 7.752 Category: Electronics Rating: 4.1 Votes: 16 Find similar productsZhumell 1.25 High Performance O-LLL Telescope Filter. This particular filter allows light transmission in the doubly ionized oxygen wavelengths. This is particularly good for viewing double-star systems where a lot of emissions are in the doubly ionized oxygen range. Oxygen III (O-III) are great for viewing diffuse and planetary nebulae. The views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae are dramatically improved. |
![]() B0047DBCHG Availability: Currently unavailable Score: 7.634 Category: Electronics Rating: 4 Votes: 2 Find similar productsZhumell 2 inch High Performance Ultra High Contrast UHC Filter. These narrowband filters are for viewing nebulae in the deep sky under a dark sky or a sky with some light pollution. They filter out specific wavelengths of light to create a high contrast to make nebulae clearer and more visible where normally we may not be able to see it with our eyes alone. | ![]() B01EL9G626 Price: $25.99 Score: 7.576 Category: Electronics Rating: 4.7 Votes: 52 Find similar productsAstromania 1.25 IR/UV Blocking Filter - Keeps Your Planetary Images Sharp. This Astromania filter only allows the visible light between 400 and 780nm through. The UV and IR regions of the spectrum are completely blocked. |
![]() B0BZCGF172 Price: $39.99 Score: 7.463 Category: Electronics Rating: 4.1 Votes: 47 Find similar productsSolomark 2 Inch UHC Light Pollution Reduction Filter for Telescope. Solomark 2 INCH UHC Light Pollution Reduction Filter for Telescope UHC Filter was designed to improve the image contrast of observed objects. Due to its ability to produce exceptionally sharp and clear images, this filter is considered one of the most popular astronomy accessories. It can be used not only for celestial observations but also for astrophotography. | ![]() B0018IOZDG Price: $79 Score: 7.299 Category: Electronics Rating: 5 Votes: 3 Find similar productsBaader Planetarium Yellow 495nm Long-Pass Filter, 2 Eyepiece. The Baader Planetarium FCFY-2 Yellow Long-Pass Filter has a bandpass at 495 nm and is designed for 2 eyepieces. It has 98% transmission efficiency and is superb for bright planet and cometary details. It can be placed anywhere in the optical path without introducing astigmatism or other defects. Baader Planetarium astronomy filters by far supersede the mediocre quality of common flame polished color filters. A fine optical polish and 2 mm thick glass allows these filters to be inserted anywhere into the optical path without introducing astigmatism or other defects. For instance, they can be used in front of a binocular viewer without degrading the image in any way.Substrates are free of striae and plane-parallel polished to within 30 seconds of arc. This eliminates any double images or ghosting due to wedge errors in the glass. The filter cell features the largest clear aperture of any telescope filter on the market for complete freedom from vignetting at any focal length.The front crown incorporates milled notches, which makes handling and threading the filter an easy operation in the dark. All surfaces are treated with a 7-layer Multi-Coating, featuring a mere 0.25% residual reflection. It is the most elaborate coating ever applied onto amateur color filters, resulting in a filter free of any false reflections under any incident angle of light.Light is the hottest commodity for all planetary observation. Especially during high magnification wo. |
![]() B00GNG596A Availability: Currently unavailable Score: 7.143 Category: Electronics Rating: 5 Votes: 6 Find similar productsICE 67mm ND16 Filter Neutral Density ND 16 67 4 Stop Optical Glass. . | ![]() B000M9H9H6 Price: $9.75 Score: 7.092 Category: Electronics Rating: 2.5 Votes: 5 Find similar productsOpteka 72mm High Definition II Multi-Coated Circular Polarizing Glass Filter For The following Lenses - Canon EF 35mm f/1.4L, EF 85mm f/1.2L II, EF 135mm f/2L Lenses & The Nikon 85mm f/1.4, 18 200mm f/3.5 5.6G Lenses. Opteka High Definition II Multi-Coated Circular Polarizing Filters create dramatic color for high visual impact. They darken blue skies, saturate colors, and reduce glare and reflections from water or glass by using an Opteka rotating polarizer. Simply look through your viewfinder as you rotate the filter and stop when you reach the desired effect. Ideal for shooting in bright sun, at beaches, snow, etc. Advances in high-index / low-dispersion optical glasses, new barrel materials, and exotic anti-reflection coatings, along with the latest in computer-aided-design / computer-aided-manufacturing, are combined to produce lenses of unprecedented quality. Nothing changes the way you see the world like High Definition II, and no company does High Definition II like Opteka. In the professional setting, Opteka's glass optics define High Definition. Change the way you view the world. Enjoy outstanding detail, enjoy enhanced clarity, enjoy Opteka. |
![]() B00009R7MV Price: $24.99 Score: 6.993 Category: Electronics Rating: 2 Votes: 1 Find similar products85N9 Color Conversion Amber 75mm Filter. 3x3 (75mm) 85N9 Color Conversion Wratten 2 Optical Gel Filter - Using tungsten film in daylight will produce a bluish cast in the photograph. The 85 series will produce natural colors when shooting with tungsten film outdoors. A #85 filter will decrease the color temperature from 5500K to 3400K and produce slightly cooler results than an 85B. This filter combines an 85 conversion filter with a Neutral Density .6 (two stops) filter. | ![]() B00GNBHZR6 Price: $22.95 Score: 6.944 Category: Electronics Rating: 4.2 Votes: 71 Find similar productsICE 58mm ND1000 Filter Neutral Density ND 1000 58 10 Stop Optical Glass. ND1000 Filter. Slim: 3.6mm deep (not inc rear threads). Ideal for Wide Angle. 10 Stop exposure correction. No color cast. Black-rimmed glass. Superfine matte black frame. Includes front threads for filters or Hood. |









